I've got my eye on a 91 Suburban 4x4 with a 6.2 Diesel in it. Anything wrong
with these engines. Ive not heard much about these engines. I heard the
block head bolt holes crack, but Ive heard others say they are good
engines. Any chronic known problems, or is this vehicle just a fluke that
should be in the junkyard.

"None4U" <nospam (AT) nospam (DOT) none> wrote


It should run for a long time. (see below for more)

That unit without a turbo might have a problem with 70, at least going up slight
grades.

Here's the skinny on diesels. They really love to be feed air. Any diesel that
does not have a turbo will be very underpowered. They will have plenty of low
end torque, but they really won't have any get up and go, or keep you there, power.
The second you hit a grade your speed will drop off quickly and it won't matter
how hard you push on the accelerator. That particular engine was bad enough
with a turbo, I could not imagine how gutless it would be without one.

Anyway, take it for a spin. Let that experience tell you if the performance is
up to par. As for durability...I'd say that it has another 100,000 on it. It is used
so who knows? Just change the oil religiously in them. Diesels create a bit
more sulfur in the oil than gas engines (even with low sulfur fuel), and that
makes for nasties in the crankcase.

"Nightcrawler" <Dirtydeeds (AT) dirtcheap (DOT) net> wrote

I want it to be able to sit a long time or go on a 400 mile trip without
breaking down.
Got it.
I can .I had a 82 VW van with a 52 hp diesel in it. 0-50 in about 18
seconds I recollect. It was dangerous slow and had two gas pedal positions
off and full down. But would spool up to about 5500 RPM.
This would be a nice upgrade from mine . Its real rusty but reliable. I
guess im going tohave to go out there again for another looksee.

Thanks

'91 was the last year of the old body for Suburban and full size Blazer;
they used the old '73 body and dash until the '92 model year.

On Sun, 23 Aug 2009 18:00:02 GMT, "Augustus" <no_one (AT) nowhere (DOT) net>
wrote:

Wow, that must be a record. Those years were some of the best designs
IMHO.

"Ashton Crusher" <demi (AT) moore (DOT) net> wrote

Yes the dash was made of real steel with a nice padded vinal cover.

I have been driving 6.2's for over 20 years and love them-- 2 pickups, a
Suburban and a van. The one problem I have had with all of them was
breaking starter bolts. Make sure it has the little bracket on the rear
of the starter. I've been driving a gas 92 GMC with a v6 for a couple of
years, but recently got a nice little 86 shortbed C10 with a 6.2, and as
soon as I fix a couple of minor things --not engine related-- am going
to start driving it. I'm seriously thinking about replacing the bolts
every oil change as a preventative measure. Larry
BTW, the 6.2's have about the same performance as the old stock 350's in
the early 70's after they lowered the compression and stuck EGR on them,
and before fuel injection. But they will easily get 20mpg where the old
gassers would be hard pressed to get 10. I got 27 out of my 83 GMC 1/2
ton once-- on the highway at about steady 60 and the a/c off.

I got one of those. It's okay, I just wish it had a turbo charger.


"None4U" <nospam (AT) nospam (DOT) none> wrote